The Nellessen Law Office is a DUI and criminal defense law firm that provides high quality and experienced DUI and criminal defense services for all DUI, felony and misdemeanor cases in Colorado. Nellessen Law Office provides legal services in the Denver metropolitan area of Colorado. We have been providing skilled legal assistance for over 20 years to individuals facing DUI and DWAI offenses, drug related charges, and in cases involving weapons, domestic violence, prostitution and all other felony, misdemeanor and traffic matters.